Intermittent drive unit for photographic printer machine



Dec. 29, 1964 K. J. KALLENBERG 3,153,342

INTERMITTENT DRIVE UNIT FOR PHOTQGRAPHIC PRINTER MACHINE Original FiledMarch 10, 1959 12 Sheets-Sheet 1 i2 3 a U &

q q 5 N k. INVENTOF? mt. Jifiuewesno 2 BY A TTORNEYS Dec. 29, 1964 K. J.KALLENBERG mmauxw'rm DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINEOriginal Filed March 1o,' 1959 12 Sheets-Sheet 2 INVE N TO R n1. JIKAI.LENBERO x z ,X MQPA'OAL AT TORNEY-S Dec. 29, 1964 K. J. KALLENBERGINTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE 12 Sheets-Sheet3 Original Filed March 10, 1959 V/NVENTOF? ICARL J. IQLLENBERG ATTORNEYDec. 29, 1964 K. J. KALLENBERG INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHICPRINTER MACHINE l2 Sheets-Sheet 4 Uriginal Filed March 10, 1959 I N VE NTOR 57ml. J Kausuasna y? Maw/J4 77' TORNEYS Dec. 29, 1964 K. J.KALLENBERG INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE 12Sheets-Sheet 5 Driginal Filed March 10, 1959 259 39 In. n.

INVENTOR KARL J KAL LENBERG A'TTORNEYS Dec. 29, 1964 K. J. KALLENBERGINTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE Original FiledMarch 10', 1959 12 Sheets-Sheet 6 INVEN TOR MAL JIfiLLE/vee'ne ATTOHNEYS Dec. 29, 1964 3,1635342 INTERMITTENT DRIVE UNIT FORPHOTOGRAPHIC PRINTER MACHINE K. KALLENBERG 12 Sheets-Sheet '7 OriginalFiled March 10, 1959 77 FIG. 9

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I IINVEN TOR KARL .Ikiuavasfie ,W4)A%E ATTORNEYS Dec. 29, 1964 K. J.KALLENBERG ,1

INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE Original FiledMarch'lO; 1959 12 Sheets-Sheet 8 FJGJJ IN VEN TOR. K431. J-II'ALLENBERGA T TORNE Y5 Dec. 29, 1964 K. J. KALLENBERG 3,

INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE Original FiledMarch 10, 1959 12 Sheets-Sheet 9 I6. 2 9 INVENTOR. F lam. Jifiusuasno AT TORNEYS Dec. 29, 1964 K. J. KALLENBERG 3,163,342

INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTER MACHINE Original FiledMarch 16, 1959 12 Sheets-Sheet 10 BY FIG. 19 W4 A TTORNE Y5 Dec. 29,1964 K. J. KALLENBERG INTERMITTENT DRIVE UNIT FOR PHOTOGRAPHIC PRINTERMACHINE l2 Sheets-Sheet 11 Original Filed March 10, 1959 AT TORNEY5United States PatentO 3,163,342 INTERMITTENT DRIVE UNIT FUR PHGTQ-GRAPHIC PRINTER MACIIWE Karl I. Kailenberg, Minneapolis, Minn, assignorto Palm Corporation, Minneapolis, Minn. Original application Mar. 10,1959, er. No. 793,503, now Patent No. 3,113,498, dated Dec; 10, 1963.Divided and this application Jan. 16, 1963, 521'. No. 251,854

8 Claims. (Cl. 226141) This is a divisional application of applicationSerial No. 798,503, filed March 10, 1959,- now Patent No. 3,113,498.

The invention relates broadly to an improvement in the field ofphotography and more specifically to a drive mechanism forintermittently feeding strip paper in a photographic printer machine.The drive mechanism is actuated by an electrical control means formingsubject matter of an application for'photographic printer Serial No.790,226, filed January 30, 1959, now Patent No. 3,110,419.

It is an object of the invention to provide a drive mechanism forintermittently actuating a feed roller which thereby intermittentlyfeeds strip paper in a positive and effective manner as required at anexposure aperture in a casing of the printer mounting the drivemechanism.

Another object is to provide a-mechanism for feeding a precise requisiteamount of print paper to the exposure station each time that the feedingmechanism is operated.

A still further object is to provide a mechanism which reduces theamount of inertia that must be overcome in order to effect an actualfeeding or advancement of the paper, and in this regard, the inventionhas for an aim the provision of a continuously running power source andappropriate controls for clutching or coupling the feeding mechanism tosaid power source at the proper times. Thus the overall printingoperation can be exedited because of the rapidity with which additionalprint paper can be moved to the exposure station.

An additional object is to provide a drive mechanism having means forquickly and easily adjusting the amount of feed of printing paper forvarious printing requirements.

The invention will appear more clearly from the following detaileddescription When taken in connection with the accompanying drawings,showing by way of example a preferred embodiment of the inventive ideawhereinlike numerals refer to like parts throughout.

In the drawings forming part of this application:

FIGURE 1 is a front elevational view of my photographic printer machine.

' FIGURE 2 is a front elevational view of the upper deck casing with thecover door removed and the paper roll magazine in open position.

FIGURE 3 is a top planview of the upper deck unit, some parts insection, other parts removed and the cover door for the casing inlowered open position.

FIGURE 4 is a longitudinal rear View on the line 4-4 of FIGURE 3, someparts in section and other parts removed.

FIGURE 5 is a detailed sectional View on the line 5-5 of FIGURE 3, someparts removed.

FIGURE 6 is a fragmentary view of a bracket mounting the drive unit andwarning switch.

FIGURE 7 is a front side view of the paper supply roll magazine inclosed position and aportion of the casing some parts in section andsome parts removed.

, FIGURE 8 is a rear side view of the magazine shown in FIGURE 7 withthe magazine partially open to illustrate the means for lockingthesupply roll within the magazine.

3,153,342 Patented Dec. 29, 1964 FIGURE 9 is a vertical section throughthepaper supply roll magazine with some parts broken away and some partsremoved.

FIGURE 10 is a sectional view on the line 10-40 of FIGURE 7.

FIGURE 11 is a top plan view of the lock member for the paper spool onlya portion of the casing and paper magazine being shown, some parts beingin section and some parts removed.

FIGURE 12 is an end elevational View of the casing with the supplymagazine removed, some parts being removed. J

FIGURE 13 is an end elevational view of, the end of the supply magazinewhich is positioned against the end of the casing.

FIGURE 14 is a perspective view of the magazine cover in open raisedposition.

FIGURE 15 is a view substantially on the line 15-15 of FIGURE 2 with thesupply spool lock arm and paper guide rollers removed, the end wall ofthe casing only partially shown. 7 7

FIGURE 16 is a front elevational view of the light lock of the papersupply and take-up magazines.

FIGURE 7 is a sectional view on the line 17--17 of FIGURE 4 showing theslip clutch and drive means for the paper take-up roll.

FIGURE 18 is a side elevational view of the drive' unit from the leftlooking at the front of the printer, some parts broken away.

FIGURE 19 is a top plan view of the drive unit.

FIGURE 20 is a side elevational view of the drive unit opposite to thatshown in FIGURE 18 with the shaft driven thereby.

FIGURE 21 is a rear elevational view of thedrive unit.

FIGURE 22 is a vertical section of the drive unit on the line 22-22 ofFIGURE 19.

FIGURE 23 is a perspective view of the. drive unit switch breaker arm. a

FIGURE 24 is a longitudinal section on the line 24-24 of FIGURE 22, someparts removed.

FIGURE 25 .is a view on the line .2525 of FIGURE 19 of a portion of thedrive some parts in section and some parts broken away.

FIGURE 26 is a sectional view on the line 2626 of FIGURE 25.

FIGURE 27 is a sectional view on the line 27.27 of FIGURE 25.

FIGURE 28 is a fragmentary vertical sectional view on the line 2828 ofFIGURE 2 some parts in section.

FIGURE 29 is a fragmentary elevational View on the "line 29-29 of FIGURE17 with the driven pulley of the take-up roll shown in broken lines.

FIGURE 30 is an end elevational view of the casing, the paper take-upmagazine removed and ,some parts removed and others broken away.

10 which is secured to the upper end of the vertical sup port 11,FIGURE 1. The vertical support 11 is vertically movable on the column 12mounted on the base 13. The

I column 12 also slidably mounts the lens deck housing 14 which housesthe analyser unit, lens and shutter arrangement not shown here. Thedetails of the support 11, the column 12, the lens deck housing 14 andthe a movement thereof relative to the base 13 are set forth in 1 33 and34 held by the rivet33.

other applications on file, the construction of which is not necessaryhere.

The support wall is secured to the vertical support 11 by means of boltsextending through the spaced holes 14', FIGURE 4, and threadedlyengaging a portion of the support 11 not shown. Secured to the wallsupport 10 by means of a series of bolts such as 15 is the casing 16.The casing 1 6 and its component parts together with the paper supplyand take-up magazine hereinafter described is generally referred to asthe paper deck with which we are primarily concerned here. The casing 16includes the bottom 17, the end wall 18, the end wall 19, the back wall20 mounted up against the support wall 19 and secured thereto as above.The. casing 16 also includes the top 21 and the front door portion 22hingedly connected atits lower edge to the narrow front wall 23 at itslower edge by meansof the hinge 24. The narrow front wall 23 borders thebottom 17, the end walls 18 and 1? and the top 21 thereby providing alarge opening 23 for access into the casing from the front. The frontdoor 22 makes a light exclusion seal with the narrow peripheral frontwall 23 by meansof the gasket 25 mounted on the inner peripheryofthe'front wall 23 which contacts the inner fiat surface of the door 22when the same is closed.

Rotatably'mounted onthe back support wall 10 and extending inwardly intothe casing 16 is the drive shaft 26 which is driven by the drive.assemblyB hereinafter described. The' shaft 26 has mounted thereon thesleeve 7 or flange support 27, and formed in the sleeve are a series .ofopposed slots 28 the inner bottom surfaces of which are parallelydisposed. The slots 28 receivethe parallely disposed and spaced edges 29and 36 of theflat circular flanges 31. Aflange 31 is further formed,with the circular opening 32 into which the slot 29' formed by the edges29 and 3t enters, and the diameter of the opening 32 is slightly greaterthan the diameter of the sleeve 27. Further provided on the flange31 arethe arcaute spring arms There are two flanges 31 provided which arespaced on the sleeve 27 by means of the slots 28 adistanceslightly.greater than the width positioned below the feed roller35 and rotatably mounted on a pair of arms 37, FIGURES '2 and 5, whichare piv-. otablymounted on the .pin 38 secured to the bracket 39.

Depending from each of the'arms 37 is a short arm 49 and connecting thelower ends of-the shortarrns 4% is the pin 41. A coil spring 42 isconnected to the pin 11 and .the upstanding bracket .3.thereby urgingthe pressure roller 36 upwardly against the feed roller 35 whereby stripprint paper designated as X may be fed by the roller j 35 as herineafterdescribed.

The numeral 4 designatesya paper advanceroller,

.FIGURES 2, 3, 4, 5 .and 7 which is freely'rotatable on the shaft 45mounted on the outer end of the arm 46;

The inner end of the arm 4-6 is connectedto a short shaft 47 which isjournaled in the enlarged portion 43 of the back support casting 1t andextendsoutwardly therefrom. The upward and fully retracted movement ofthe arm 46 is limited by the stop shoulder 46 securedto the casing,

The outer end'of the shaft 47 hasconnected thereto theshortsubstantially L-shaped arm 49, and pivotally connected to the outerend of the arm 5th is the outer end of the outerarm 51. is fixedlysecured tothe Outercnd of the brake shaft 52 The'inner or lower end ofthe arm 51 which is rotatably mounted in the enlarged portion 53 of theextended end portion 54 of the back support wall casting 10. Secured tothe inner end of the brakeshaft 52 is the short brake shoe arm 55 andmounted on said arm 55 is the brake shoe-or foot member 56 which isengageable with the outer edge of the pulley 57 mounted on the rear sidewall of the magazine C, mounted on one end of the casing 16 and housingthe supply roll of print paper. The arms 49 and 59 are urged towards thecenter of the casing 16 by means of the coil spring 49 secured to thelower end of the arm 49 and the spring mount 5%, the arm 49 pivotallyconnected to the arm 50 as hereinbefore set forth. Withthe arms 49 and56 so urged the paper advance roller 44- is held in a raised position asin FIGURE 2 and the brake shoe 56 is against the pulley 57 braking thesame. A second magazine D is mounted on the opposite end of the casing16 wherein the exposed print paper is taken up, audit is to be notedthat both magazines are identical and interchangeable as will be pointedout more particularly hereinafter. The pulley 57 is mounted on theouterend of the shaft 58 rotatably mounted on the double wall 59 portionof the magazine C by means of the bearings 69- and 61 mounted in thehousing 2, particularly in FIGURE 10. A print paper supply spool 63 issecured to the shaft 58, and secured a 16 and thereby prohibit the spool63 from rotating. This is also true with regard to the magazine 1). As aresult print paper wound on the spool 63 will notbe unwound from thespool. The locking means for the spool 63 includes a U-shaped lockmember 65, FIGURES 7, 8 and 11 particularly, formed of the base portion66 and the spaced leg portions 67 and 68 extending therefrom. The legportion 67 of the lock is pivotally mounted in the caring member 69connected to the wall portion 70 of the magazine C, the wall portion 79being connected to the double wall portion the two wall portions 70 and59 making up the rear stationary side wall 71 of themagazine C. v

The outer free end of the leg portion 67 has connected thereto the arm72 which lies alongside the stationary wall 71 of the magazine C. Alsoprovided is the coil spring 73 which is connected atone end to the outerfreeend of the leg portion 63 of the lock member 65, the other end ofthe spring73 being. connected to the side wall 71' of the magazine. Withthe spring so connected thesame urges the leg portion 68' downwardly,but with the arm 72'bearing against the end wall 18 of the casing 16when i 'the magazine is in the attached position shown in FIG- URE 1,the arm 63 of the lock cannot move downwardly to the edge of thecircular spool lock. beyond the position shown in FIGURES 2 and 7. Thecircular disc nected at its inner end to the shortarm 49 isthesubstan-'tially horizontal-intermediate arm 50. Pivotally conlock .member 6;.has formed on the edge thereof the notches 74.- \Nhen the magazine Cis lifted slightly for removal from the casing 16, as hereinafter setforth in detail, the arm 72, moves to the position shown in FIG- URE 8by means of the spging 73 for the resistance inv the form of the wall'18 has been removed." As a further result, theleg portion 68 is pulleddownwardly and contacts the outeredge of the disc lock 64 and into oneof the notches" 74 formed in the edge thereof, FIGURES 8 and 9. Due tothe spring 73 the leg portion 68 0f the rolled.

When the magazine C is attachedto thefcasing 16,-in

V the detailedrnanner hereinafter. set forth, the'arm 72 I pivoted andforced against the wall 15; of the casing and in pivoting the legportion 68 of the lock member 65 is lifted out of the notch 74 ofthedisc 64 thereby removing the locking means from the spool allowingthe disc 64 and spool 63 connected thereto to rotate when the brake 56is removed.

The magazine C includes the stationary rear side wall 71 to which isconnected the inner end wall 75. The end wall 75 is formed with thepaper aperture 75. Also magazine C includes the partial top wall 76, thepartial bottom wall 77, and the hingedly mounted movable cover member78. The cover member 78 includes the arcuate end portion 79 the upperedge of which when viewing the same in closed position, is hinged to theouter edge of the partial top wall 76 by means of the hinge 80. Thelower end of the arcuate end portion terminates in the flat portion 81on which is mounted the fastener portion 82. The cover further includesthe partial arcuate side wall portion 83 connected to the edge of thearcuate end portion 79 and secured to the opposite edge is the wallportion 84 formed with the top edge 85 and the vertical edge 86 whenviewed in closed position, FIG- URE 1. The edge portion 85 positionsneatly behind the partial top wall portion 87 when the cover 78 isclosed, as in FIGURE 1, and the edge portion 56 positions bebind thepartial vertical wall 38 of the magazine C. The wall portion 88 joinsthe wall portion 87 with the former depending from the partial top wall76 and the latter extending outwardly from the inner wall 39 of themagazine C, the inner end wall 75 being removably mounted adjacent theend 18 of the casing 16 when the magazine is in operative position.

Secured to the end wall 18 of the casing 16 is the magazine receiverplate 96, FIGURES 5 and 12 in particular, which is formed of the flatbase plate portion 91, and a peripheral plate wall including the upperwall 22, the lower wall 93, the side wall 94 and the opposed side wall95. The base portion 91 has the paper receiving aperture 96 formedtherein which is in alignment with a similar aperture 97 formed in theend wall 18.

The numerals 55 and 59 designate a pair of identical spring tonguessecured to the underside 17 of the casing 16 in spaced relation andextending outwardly of the plate 90 and each has formed therein theholes 100 and 1131 respectively, which receive the short pins 162 and1633 mounted on the underside of the partial bottom wall 77 to aid inlocking the magazine C on the receiver plate 99 against the wall 18 ofthe casing 16.

The magazine C is initially attached to the casing by a pair of spacedpins 104 extending upwardly from the partial top wall 76 which are firstpositioned in the spaced holes 105 formed in the upper wall 92 of themagazine receiver plate 91? by holding the magazine C substantially atthe angle illustrated in FIGURE 8. The magazine is then brought againstthe casing to engage the pins 152 and 193 with the spring tongues 93 and9? which direct the pins into the holes 101 and 1111 respectivelythereof. As a result the magazine is securely and removably locked tocasing 16, with the cover 73 in an open or closed position. With themagazine C attached to the end of the casing 16, the aperture 75 of themagazine wall 75 is in alignment with the aperture .95 of the receiverplate 91) and the aperture 97 of the casing end wall 18 for receivingthe strip print paper hereinafter referred to.

The magazine C also includes the idler shaft the rear end of which isrotatably mounted on the wall portion 75 of the stationary rear sidewall '71 by means of the pair of bearings 11%. Further provided are apair of spaced paper guide rollers 1%7 and 153 adjustably mounted on theshaft 1195'. The rollers 137 and 1% are each formed with the annularpaper supporting hub 1419 and the annular shoulder 11%. The spacebetween the paper guide rollers 15? and 1118 is determined by the widthof the printing paper used on the spool 63. The numeral housing 112which includes the substantially horizontal bottom portion 113 which hasthe elongated paper aperture 114 formed therein. The housing 112 furtherincludes the outer front wall 115 having an upright fiat portion 116terminating in an arcuate portion 117 which terminates in a further flatupright portion 118 terminating in a second arcuate portion 119 whichterminates in the horizontal top portion 126. Extending from the topportion 126 of the housing 112 is the pair of lugs 121 and 122 whichreceive the mounting screws 123 and 124 extending from the wall '75 tothereby support the housing 112 on the wall 75.

Further provided within the magazine C is the paper guide 125,particularly FIGURES 9 and 15, positioned below the light lock 112 whichis formed of the arcuate base portion 126 terminating in the upwardlyand angularly extending fiat portion 127, the upper edge of the portion127 being positioned adjacent the aperture 114 of the housing 112. Thebase portion 126 is formed with the lip portion 123 which is securedunder the lip 129 formed on the outer edge of the bottom wall 77. Theupstanding flat portion 127 of the guide is further supported by thebracket 130 secured thereto and to lugs 131 and 132 formed on the loweredge of the housing 112 by means of the bolts 133 and 134 extendingthrough the lugs 131 and 132 from the wall 75 thereby further supportingthe housing 112 in conjunction with the screws 123 and 124.

I further provide within the light lock housing 112 the upper roller 135rotatably mounted on the shaft 136 secured to the ends 112' and 113' ofthe housing 112. Also provided is the lower roller 137 rotatably mountedon the shaft 138 which is below and slightly oifset from the shaft 136and the upper periphery of the lower roller 137 is substantially in linewith or slightly higher than the lower periphery of the upper roller135. The inside of the housing 112 is blackened and this together withthe roller provides a light lock for the magazine C. The continuousstrip print paper indicated as X and mounted on the spool 63 is pulledoil? the spool, passed under the guide rollers 167 and N8, extendedupwardly in front of the guide 125 and upwardly through the aperture 114of the light lock 112, thence between the rollers 135 and 137, and outthrough the aperture '75. The paper X may then be fed from the magazinethrough the apertures 96 and 97 of the plate 91 and the casing .end wall18 respectively and into the casing 16 where the paper is positioned onthe paper advance roller .44 and thence downwardly to and under the feedroller 35 where it is directed to the table member generally designatedas 139 which is mounted on the bottom 17 of the casing 16.

Paper Feed Drive Assembly The drive shaft 26 is intermittently rotatedby the paper feed drive assembly generally designated as B, FIGURES18-24. The shaft 26 is rotatably mounted at one point in the bearing 140secured within the adjustable outboard bearing support 141 which isthreadedly engaged with the hub 142 formed as part of the inner wall 143of the housing 144, thereby making it adjustable. The housing 144 alsoincludes the upper wall 145, the lower wall 146 and end walls 147 and148. The housing 144 is formed with the four bosses 145' which mount thechassis 146 by means of the bolts 147'. Further provided is the thrustbearing 148' slidably mounted on the shaft 26 inwardly of the bearing140 and against the shoulder 149 formed internally of the bearingsupport 141. Slidably positioned on the shaft 26 and against the bearing148' is the stepped washer 151 against which the inner end ofthe spring151 is positioned on the hub 152 and bears against the inner race 153 ofhereinafter described.

the washer 162 being positioned between the plate portion 161 and theratchet 163 formed as part of the hub 152. The hub 152 is keyed to theshaft 26 by means of the pair of keys 164.

The chassis 146' includes the flat portion 155 and the support portion166 extending at a right angle therefrom. The plate portion 165 mountsthe cylindrical main bearing housing 167. The housing 167 is secured tothe plate 165 by means of the bolts 167. Positioned within the housing167 is the main bearing 163 which, inconjunction with the bearing 14%,rotatably supports the shaft 26. Formed on the outer end of the housing167 is the annular recess 1&9 in which is positioned the weak coiledreturn spring 170, one end of which is connected to the: bracket 171connected to the return stop 172 for the arm 174, the other end having ahook portion 173 connected to the switch breaker arm 174. The arm 174includes the circular base portion 175 having the concentric hole 176through which the shaft 26 extends. The base 175 is freely rotatably onthe shaft 26 and extending radially from the base 175 is the arm 177 onthe outer end of which is formed the shoulder 178.

Further provided is the cylindrical pressure slide 179 formed on thesleeve portion 139 and the annular shoulder 181 on which is molded theannular friction ring 132.

The slide 179 is slidably mounted on the shaft 26 by means of the pin183 connected thereto and extending through the slot 184 formed in theshaft 26. The pin 183 also extends through the slide actuating rod 185which is slidably'mounted in the shaft 25 within the bore 186 formedtherein. The rod 125 together with the slide 179 pinned theretois urgedoutwardly of the shaft 26 by means of the coil spring 187 positionedwithin the bore 186 and abutting the inner end of the rod 135. When theshaft 26 is restrained from rotating, the friction ring 182 ismaintained out of contact with the base 175 of the arm 174 by being'heldwithin the confines of the housing 167 through the: action of the latcharm 188 bearing against the outer end of the rod 185, the latch armhereinafter described.

' A collar 189 is secured to the shaft 26 and spaced slightly from thebase 75 of the arm 174 to act as a stop for the base 175 whereby thefriction ring 182 can engage the base 175 and thereby in effectconnecting the arm 174 to the shaft 26 whereby the arm 174 is caused torotate with the shaft 26.

The aforementioned latch ar-m '138 is pivotally jour- .is positioned andthe right angular leg portion-194 which has formed on the outer endthereof the latch head portion 195. The lower end of the latch arm 188is connected to the outer end of the solenoid armature 1% of thesolenoid 196 by means of the chain link 157.- .The leg portion 194 ofthearm 185 is urged downwardly 'by means of the spring 1% connected theretoand the an-. chor, screw 199, however the extent of the downwardmovement of the head 1195 of the latch arm isdetermined "by the stopmember 2119 mounted on theichassis 146. The position of the frictionring 182 relative to the base 175 ,of the contact breakerarm 17 maybeadjustediby' the screw 2111 mounted on the arm 188 which bears againstthe outer end of. the slide'actuating rod 185.

-The numeral 202 designates a contact disc assembly support including aseries of electrical contact discs and insulators hereinafter described,and the assembly includes the hub portion 203 and the flange portion294. The hub portion 293 is rotatably mounted on the end of the shaft 26by means of the bearing 205 thereby making thedisc assembly 2192rotatable. Secured to the in-. ner surface of the flange 204 is the baseportion 266 of the bracket 297 which includes the right angularupstanding leg 2418, FIGURES 20 and 27. The base portion 206 of thebracket 267 is secured by means of the screws 26? extending from thebrass contact disc 210, through the flange 204 and threadedly engagingthe bracket 207. The leg portion 208 supports the fixed contact 211,FIG- URES 20, 25 and 27. The numeral 212 indicates a disclike insulatorpositioned against the contact disc 210 both of which have a snug fit onthe hub 263. A further brass contact disc 213 is also mounted on the hub24).: against the insulator 212 and securing the disc 213 against thedisc 212 are the screws 214 which extend through the discs 212, 21% andthe flange 204 where the same threadedly engages the leg portion 215 ofthe bracket 216.

The bracket 216 also includes the upright leg portion 217 which mountsthe base end 213 of the flexible contact arm 219. A contact 229 ismounted adjacent the outer end of the flexible arm219 for engagementwith the fixed contact 21-1. Secured to the, outer'end of the arm 219 isthe insulating contact lifter 221. V

Positioned on the hub 293 and adjacent the contact disc 213 is theinsulator disc 222 and adjacent the disc 222 is the outermost contactdisc 223 which is secured by means of the screws 224 extending throughthe discs 222, 213, 212 and 210 and the supporting flange 204,

where the screws threadedly engage the base portion 225 of the bracket226. The upright leg portion 227 of the bracket 226 mounts the contactarm 228 not used in the present cycle.

Also provided is the outermost insulator disc 229 positioned on the hub203 adjacent the contact disc 223 and which is secured in position bythe three screws 230 threaded into the gear member 231 mounted outwardlyof the disc 229 and extending through the various discs from the flange2%. 1

Electrical conductivity ismade from the contact disc 223 to the bracket225 by means of the screws 224 extending through the bosses 232 formedin the insulator discs 212 and 222. Conductivity is made from thecontact disc 213 to the bracket 216 by means of the screws 214 extendingthrough the bosses 233 formed in the insulator disc 212. Conductivity ismade between the contact disc 2143 and the bracket 227 by means of thescrews 209. The bosses 234- of the insulator discs 212, 222 and 229insulate the screws 230 from the contact discs 210, 213 and 223.

Further provided is the terminal block 235, FIGURE 20, mounted on thesupport portion 166 of the chassis 146' and secured to the block 235 isthe base end 236 of the spring conductor arm 237. The base end 236terminates in the outer arm portion 238 which bears against theconductor disc 213. A second spring conductor arm 239 is formed withthebase end 240 secured to the terminal block 235 adjacent the base end236 of the spring arm 237. The base. end 240 of the second arm 239terminates in the outer arm'po rtion 241v which bears against theconductor disc 21d,

I further provide means for changing the distance between the shoulder178 of the contact breaker arm 174 and the contact lifter 221, FIGURE25. The distance 221 includes the index gear member 242 rotatablymounted on the wall fsupport ldo byineans of the pin 243 whereby theteeth of the gear 242 engage with the teeth of the gear 231 connected tothe contact disc assembly 202 as hereinbefore set forth.

It will be seen that as the index gear 242 is rotated in acounterclockwise direction, as viewed from the rear of the machine thegear member 231 is rotated in a clockwise direction thereby rotating thecontact disc assembly 202 in a clockwise direction thereby moving thepair of normally closed contacts 211 and 220 and contact lifter 221associated therewith away from the shoulder 17% of the contact breakerarm. As a result the amount of travel of the shoulder 17 8 is increased.The distance between the shoulder 178 and contact lifter 221 may bedecreased by reversing the rotation of the index gear 242. The indexgear 242 may be locked in position by means of the bar 244 pivotallymounted on the pin 245 secured to the support 166. The bar 244 is urgeddownwardly for engagement with the teeth of the gear 242 by means of thespring 246.-

The sprocket 160 is continually rotated by means hereinafter describedwhen the machine is used, and the plate portion 161 is urged against thefelt washer 162 which in turn is urged against the ratchet 163 securedto the shaft 26 as hereinbefore described thereby providing a frictionslip clutch, the ratchet 163restrained from rotation by the head portion195 of the latch arm 188 in down position in engagement with a tooth ofthe ratchet 163. It is to be noted that when the head 195 is inengagement with the ratchet 163 that the arm 188 through the rod 185maintains the friction ring 182 disengaged from the base portion 173 ofthe arm 174, the exact position of the ring 132 determined by theadjusting screw 201.

To operate the drive assemblyB, the solenoid generally indicated bynumeral 196' is energized by a pulse to a relay hold-in circuithereinafter referred to. The electrical source of power is transmittedthrough conductor arm 238, contact disc 213, contact 220, 211, contactdisc 210 and through conductor arm 241, the contacts-220 and 211 therebybeing in series with the parallel combination of the hold-in relay (notshown) and solenoid 196'. The armature bar 196 is drawn inwardly therebypivoting the latch arm 188 and as a result the rod 185 moves outwardlyof the shaft 26 by means of the spring 187 thereby causing the ring 182to engage the base portion 175 of the arm 174 in effect connecting byfriction means the arm 174 to the shaft 26. Further pivoting of the arm188 withdraws the head 195 thereof from the ratchet 163, and as a resultthe shaft 26 is rotated through the driving action of the drivensprocket 160 and the fric tion slip connection afforded by the flange161, the flat washer 162 and the inner face of the sprocket 163 ashereinbefore described. With the rotation of the shaft 26 the paper feedroller 35 mounted thereon is rotated as hereinbefore and hereinafterdescribed.

As the shaft 26 is rotated, as set out above, the arm 174 is caused torotate and continues to rotate until the shoulder 178 thereof engagesthe contact lifter 221 and further rotation separates contacts 220 and211 thereby de-energizing the solenoid 196', and hold-in relay abovereferred to. As a result the spring 193 is free to and does draw the legportion 194 of the arm 108 downwardly thereby engaging the head portion195 with a tooth of the ratchet 163 and stopping the rotation of theshaft 26. Further pivoting movement of the arm 188 moves the rod 185inwardly through the screw member 201 and disengages the friction ring182 from the-base portion 175 of the arm 174. The arm 174 thenrotatively returns due to the action of the spring 170 to its originalposition as determined by the stop 172..

It is to be noted that a greater 'or lesser rotation of the shaft 26 maybe efiected to thereby feed a greater or lesser length of strip materialX through the rotation of V the feed roller 35 by varying the positionof the contact disc assembly 202 to which the fixed contacts220 and 211are connected. Electrical conductivity ismaintained which the paper ispositioned. A plate 253 is positioned upon the paper support 250 andmaintained in position by the stops 254. An alram device designatedgenerally as 255 is mounted on the arm 256 overlying the path of theprint paper, the arm 256 being pivotally mounted on the rod member 257connected to the plate 258 which is secured to .the rear casing wall 20.The arm 259 of the alarm 255 is responsive to a splice hole formed inthe paper and through electrical circuit means not shown, the audiblesignal is given so that the operator will not print in the spliced area.

The print paper moves from the paper support 250 to and under a pair ofrollers 260 and 261 mounted on the carriage 262 which is slidably andadjustably positioned on the table member 139. The carriage 262 mounts apaper slitting device and a paper numbering device.

The print paper strip is passed upwardly from the rollers 260 and 261and-over a cushion or take-up roller 263 freely rotatable on the shaft264 secured to the end 265 of the arm 266. The opposite end 267 of thearm 266 is pivotally connected to the rear casing wall 20 and the arm isurged upwardly by means of the coil spring 268 secured to the arm 266and the support 269. The upward movement of the arm 266 is limited bythe stop 271 also secured to the rear wall 20. Secured to the innersurface of the end Wall 19 is the light lock housing 112" identical tothat mounted in the magazine C but in reversed position, FIGURE 2. Thenumeral 272, FIGURE 30, designates a magazine receiver plate secured tothe casing end wall 19 and which is substantially the same as thereceiver plate hereinbefore described and which receives the magazine Dwhich is the same construction as magazine C and may be usedinterchangeably therewith.

The receiver plate 272 includes the fiat base portion 273, theperipheral upper, lower and side walls 274, 275 and 276 respectively.The plate portion is formed with the paper receiving aperture 277 which.is in alignment with a similar aperture formed in the end wall 19. Theupper wall 274 of the magazine receiver plate 272 is formed with thepair of spaced holes 278 which receive the pins 102 and 103, FIGURES l3and 2, of the magazine D which is identical to magazine C only inreversed top to bottom position. In other words, where the pins 102 and103 of the magazine C are-in a lower position and engage the springtongues 98 and 99 as in FIGURE 2 and FIGURE 12, in the case of magazineD the pins to thereby mount the magazine D on the casing 16 insubstantially the manner in which the magazine C -is mounted on thecasing 16 as hereinbefore described. 7 v 1 As pointed out the magazine Dis a duplicate of magazine C and includes the light lock housing 1'12,which is identical with the housing 112 including the upper roller andthe lower roller 137 between which the paper X is positioned. The paperX is further fed upwardly and around the guide rollers 107 and 108 tothe spool 63,

, which in the case of the magazine D is the take-up spool.

When the magazine D is secured to the end of the casing as set outabove, the pulley 57 automatically en- 12 g g 1 gages the belt 283 whichis mounted on the idler pulley 284 on the lower shaft'235 .journaled inthe boss 236 has secured thereto the drive gear 294 mounted on the shaft295 of the gear reduction unit 296 driven by the .motor 297. The motor297 is mounted on the support frame 298 secured to the wall support 10by means of the bolts 299 and operated by a conventional switch and asource of electrical power not shown.

Positioned on the drive gear 294 is the chain 390 which is alsopositioned on the take-up idler gear 391 mounted V on the arm 302adjustably mounted on the support wall 10. The chain 309 is alsopositioned on the sprocket 169 of the drive assembly B hereinbeforedescribed, the chain passing downwardly through the opening 393 formedin the upper. wall 145 of the housing 144.

With regard to the operation of my device and looking particularly atFIGURE 2 wherein the print paper X is threaded'in operative position,the paper X receives an exposure from a light source from electricaltiming means located beneath the base 13 which passes through a negativepositioned on the frame 13', the objective lens positioned within thelens deck housing 14 secured to the lower end of the bellows 14 andthence to the aperture 251.

After the termination of the above exposure, the paper feed roller 35 isrotated by means of the drive assembly hereinbefore described throughelectrical wtiming means. As the roller 35 is rotated in acounterclockwise direction the paper X is advanced between said rollerand the pressure roller 36 to the paper mask and 252, and as the roller35 rotates, the paper draw-up roller 44 is pulled downwardly about thepin 47 substantially to the broken line position of FIGURE 2 against theaction of the spring 49. The rotation of the pin 47 removes the brakeshoe 56 from the edge of the pulley 57 of the magazine C through thelinkage hereinbefore described thereby allowing the paper supply spool63 to be rotated. When the feed roller 35 is stopped, the draw-up roller44 is drawn upwardly by the spring 49' and in so doing draws a length ofpaper X off the spool 63. As the roller 4% assumes its substantiallyupward position, FIGURES 2 and 5, the brake shoe 56 engages the pulley57 thereby braking the spool 63. The length of paper is drawn off, asabove, so that when the feed roller 35 is again rotated to advance thepaper X, the mass of the roll of paper and the spool does not have to beovercome, but rather the feeding of paper by the roller is directly fromthe length of paper which was drawn off the spool by the return of thedrawup roller 44.

With further regard to the action of the machine, the

paper X extends'underthe pair of rollers 26 0 and 261 and upwardly toand over the take-up roller 263, then downwardly into the lightlockhousing 112 wherethe paper is passed between the rollers 135 and 137thereof. The paper further extends through the apertures formed in thecasing end wall 19 and the'end of the magazine D,

it thence between the rollers 135 and 137 of the light lock housing 112"from which the paper is passed over the paper guide rollers N7 and 108in the magazine D and upon the take-up spool 63 therein. a

When the magazine D is in the position of FIGURE 2 the pulley 57 thereofis urged to rotate due to the fact that it engages the belt 283 drivenbythe slip clutch 2% through the pulley 287 both of which are mounted onthe shaft 283, FIGURES 3, 4, 17 and 29.. It is to be noted that thedriving force of the slip clutch creates a pull on thepaper X and as aresult the take-up roller 253' is pulled into the downward position ofFIGUREZ.

- the mass to overcome of the roller 263 is less than the turningmovement urged on the take-up spool 63 by the slip clutch 2943. As thepaper is begun to be drawn up wa'rdly by the cushion or take-up roller263, the spool 63 begins to rotate to wind paper on the same. As theadvance of the paper is stopped by the roller 35, the takeup spool 63continues to rotate and wind paper thereon, and as this winding occursthe roller 263 is' drawn downwardly by the pull of the paper X againstthe action of the spring 268, thereby providing a cushion for the papertake-up on the take-up spool 63 with the resultant elfect that there issubstantially no chance for movement of paper at the paper support mask250. Further, an additional benefit of the action of the cushion roller263' is to keep the paper under slight tension and aid in correcttracking through the mechanism.

The electrical power to the casing 16 is provided through the interlockswitch 304 mounted on the inside .of the casing, the points of which areheld in closed position by means of the lug 395 mounted on the inside ofthe door 22 when the door is in closed light-sealing position, FIGURE28. The switch contacts are opened when the door 22 is opened therebycutting off power to the casing as a safety factor. The cover ismaintained in closed position by means of the lock members 366 whichengage a'portion of the casing.

It is to be noted that when both of the magazines C and D are attachedto the casing 16, the entire unit is light proof, and when the take-upspool 63 is full with exposed paper, the magazine D may be removed fromthe casing for further] processing, for the magazine is impervious tolight. This is particularly desirable when color prints are made forlight must be excluded. With the magazine D removed light cannot enterthe casing As' can be seen from FIGURE 20, the timer 307 utilized fordetermining the exposure period can be employed for providing a pulse toenergize the solenoid which is held in by the hold-in relay 308 at.theend of the exposure period.

What is claimed:

. l. in a photographic printer machine including a casing, a supply rollfor furnishing print paper to said printer, a print paper drive rollermounted in said casing for advancing said paper within the casing,continuously rotating power means, a slip clutch mechanism for couplingsaid power means to. said paper drive roller, means normally engageablewith said clutch mechanism to cause slippage thereof so that said paperdrive roller remains stationary, means for disengaging said clutchengaging means from said clutch mechanism so that said paper driveroller is rotated to advance said paper, means rcsponsive to the degreeof rotation of said paper drive roller for inactivating said disengagingmeans after a predetermined rotation of said paper drive mechanism hastaken place, and a second clutch mechnism for coupling said responsivemeans to said power means, said second clutch mechanism being operatedinto engagement by said disengaging means.

2. In a photographic printer machine including a cas- I ing, a supplyroll for furnishing print paper to said printer, a print paper driveroller mounted in said casingfor advancing said paper within the casing,continuously rotat-ing power means, a firstclutch mechanism for couplingsaid power means. to said paper drive roller, latch means for normallymaintaining said clutch mechanism disengaged and thus causing said paperdrive roller to rel'main-stationary, a solenoid for. actuating saidlatch means into a disengaged relation with said clutch mechanism when"said solenoid isenergized, a pair of normally closed contacts in circuitwith said solenoid via which an energizing circuit for said solenoid.may be established, a rotatable arm element for breaking said contactsafter'a preferred angular movement thereof has been reached, 'a secondclutch mechanism for coupling said rotatable arm element to said powermeans, said second clutch mechanism being actuated into engagement by aportion of said latch means when said solenoid is energized, wherebysaid solenoid will be de-energized when said contacts are opened by saidarm element, the preferred angular movement of said arm elementdetermining the degree of rotation of said paper drive roller and hencethe length of paper advanced thereby.

3. The device of claim 2 characterized by the inclusion of adjustmentmeans supporting said pair of contacts for movement with respect to thestart position of said arm element so that said arm element is compelledto travel a greater distance before opening said contacts, therebyincreasing the length of paper advanced by said paper drive roller.

4. In a device for feeding a predetermined length of strip material to aprocessing point, a rotatable drive roller for advancing the strip,drive means, a first clutch mechanism for coupling said roller to saiddrive means, means for engaging said clutch mechanism to rotate saidroller, means rotatable in accordance with said roller for disengagingsaid first clutch mechanism after a desired amount of rotation of saidroller, and a second clutch mechanism for coupling said last-mentionedmeans to said drive means upon operation of said means for engaging saidfirst clutch mechanism, whereby a predetermined length of material isadvanced to said processing point by said rotatable drive roller.

5. In a device for feeding a predetermined length of strip material to aprocessing point, a rotatable drive roller for advancing the stripmaterial, continuously rotating drive means, a first clutch mechanismfor coupling said roller to said drive means, a solenoid, means actuatedby said solenoid for effecting engagement of said clutch mechanism whensaid solenoid is energized, a pair of normally closed contacts via whichsaid solenoid is energized, a rotatable arm for breaking said contacts,a second clutch mechanism for coupling said arm to said drive means, andmeans actuated by said solenoid for eifecting engagement of said secondclutch mechanism when said solenoid is energized to cause'said arm torotate, whereby said contacts will be broken upon sufiicient rotation ofsaid arm to de-energize saidsolenoid and thus stop said roller fromrotating after a predetermined length of strip material has beenadvanced to said processing point.

6. In a device for feeding a predetermined length of strip material to aprocessing point, rotatable drive roller for advancing the stripmaterial, continuously rotating drive means, a slip clutch mechanismincluding first and second discs, the first disc being fixedly connectedto said drive means and the second disc to said roller, a plurality ofratchet teeth disposed on said second disc, a

ergized, a contact disc assembly mounted for rotation about the axis ofsaid roller including a plurality of insulating discs, a pair of contactdiscs interleaved between said insulating discs through which saidsolenoid can be energized and a pair of normally closed contacts on oneof said insulating discs disposed radially outwardly from the axis ofrotation of the unit and electrically connected to said contact discs, acontact breaking arm mounted for rotation about said axis, spring meansbiasing said contact breaking arm in a rotative direction away from saidcontacts, a clutch mechanism for couplingsm'd drive means to saidcontact opening arm, and means operable by said latch arm for causingengagement of said lastmentioned clutch mechanism when said solenoid isenergized to initiate rotation of said contact breaking arm, wherebywhen said arm has been rotated sufficiently by said drive means saidcontacts will be broken to de-energize said solenoid and thus permitsaid one end of the latch arm to re-engage said ratchet teeth after thedrive roller has advanced a predetermined length of said strip material.

7. The device of claim 6 characterized by the inclusion of a gear wheelfixedly carried on said contact disc assembly for rotation therewith, asecond gear wheel in mesh with said first gear wheel for rotating thefirst gear wheel into an appropriate position for effecting a desiredpre- References Cited by the Examiner UNITED STATES PATENTS 1,437,94912/22 Sherman et a1. 226-134 2,541,737 2/51 Bardsley et a1. 226-1383,031,952 5/62 Backhofl et a1 226-13 9 X SAMUEL F. COLEMAN, PrimaryExaminer. RAPHAEL M. LUPO, Examiner.

1. IN A PHOTOGRAPHIC PRINTER MACHINE INCLUDING A CASING, A SUPPLY ROLLFOR FURNISHING PRINT PAPER TO SAID PRINTER, A PRINT PAPER DRIVE ROLLERMOUNTED IN SAID CASING FOR ADVANCING SAID PAPER WITHIN THE CASING,CONTINUOUSLY ROTATING POWER MEANS, A SLIP CLUTCH MECHANISM FOR COUPLINGSAID POWER MEANS TO SAID PAPER DRIVE ROLLER, MEANS NORMALLY ENGAGEABLEWITH SAID CLUTCH MECHANISM TO CAUSE SLIPPAGE THEREOF SO THAT SAID PAPERDRIVE ROLLER REMAINS STATIONARY, MEANS FOR DISENGAGING SAID CLUTCHENGAGING MEANS FROM SAID CLUTCH MECHANISM SO THAT SAID PAPER DRIVEROLLER IS ROTATED TO ADVANCE SAID PAPER, MEANS RESPONSIVE TO THE DEGREEOF ROTATION OF SAID PAPER DRIVE ROLLER FOR INACTIVATING SAID DISENGAGINGMEANS AFTER A PREDETERMINED ROTATION OF SAID PAPER DRIVE MECHANISM HASTAKEN PLACE, AND A SECOND CLUTCH MECHANISM FOR COUPLING SAID RESPONSIVEMEANS TO SAID POWER MEANS, SAID SECOND CLUTCH MECHANISM BEING OPERATEDINTO ENGAGEMENT BY SAID DISENGAGING MEANS.